Improvement in oscillating valves for steam-engines



L.; MANGOLD. OSCILLATING-VALVES FOR STEAM-ENGINES.

No. 1937981. r lPatented 7,1877.l

NJFETENS. PNTO-UTHDGRAPHER. WVASI'MNGTUN` 0.0

FFIGE.

LEONARD MANGOLD, OF OHATTANOOGA, TENNESSEE.

Specification forming part of Letters Patent No. l93,9l, dated August 7, 1877; application led November 10, 1875.

To all lwhom t may concern Be it known that I, LEONARD MANGoLn, of Chattanooga, in the county of Hamilton and State of Tennessee, have invented certain new and useful Improvements in Rotary Valves; and I do hereby declare the following to be a full, clear, and exact description thereof', reference being had to the accompanying drawing, and to the letters of reference marked thereon.

The nature of my invention consists in the construction and arrangement of a rotary valve, as will be hereinafter more fully set forth. i i

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring` to the annexed drawing, which forms a part of this specification, and in which- Figure lis an end elevation of my valve. Fig. 2 is a side view of the same. Fig. 3 is a transverse vertical section, and Fig. 4 a longitudinal vertical section thereof. Fig. 5 is a perspective View of the valve proper, and Fig. 6 is an enlarged section of a part thereof.

A represents the valvecase, provided with the steam-ports b b and exhaust d between the same. It is also provided with the steaminlet a, running up one end of the case and entering the same at the top, as shown in Fig. 4.

The valve-case A is made in cylindrical form, and within the same is placed the oscillating cylindrical valve B, provided at the top with steaminlet h, and at the bottom with steam-outlet ports e e. Between these latter ports is a triangular partition, C, extending the entire length of the valve and upward above the center thereof. -In the base of this partition C is a recess, t', which forms the passage for the exhaust-steam to the exhaustport d.

Around the steam-inlet port h in the top of the valve B is made a groove of' suitable depth to receive a metal frame, D, which is curved to correspond with the curvature of" the valve, and is forced outward by means oi' two or more springs, f, placed under it within the groove. This metal frameforms the packing for the valve,and surrounding' as it des all four sides of the port h, it forms a bearing entirely around the same, and thus prevents A the escape of steam in every direction.

The steam entering the valve through the port h strikes the apex of the triangular partition C, and is thereby divided in such a man-v ner as to pass with equal force through either of the ports e, accordingly as the valve is turned to make said ports coincide with the ports b b.

The packing-frame D may be made of any suitable metal, and when the sanne is worn out it can be easily removed and another put in its place again.

The entire valve is simple and cheap in construction, works easily, and is not liable to get out of order.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination ofthe cylindrical valve B,

having ports h and e e, with groove around the port h, the metal frame D, and springs j", the valve-case A, with its ports, and the partition G, with recess t', all substantiallyas and for the purposes herein set forth.

- LEONARD MANGOLD. Witnesses:

WM. VAN DER, ULLRICH,

JOHN BULL. 

